cocoa - Model Key Path With Multiple Properties

Question

Here, I'm using an NSArrayController to bind properties from Core Data entities into the value of text view table cells.

What syntax do I use to access multiple properties of the entity in the Model Key Path?

Example as a format string: @"%@, %@", lastName, firstName;

Answer 1

在文本字段的绑定检查器中：

1. 选择“带模式的值：显示模式值1”
2. 绑定到阵列控制器
3. 控制器键 =selection
4. 模型键路径 =lastName
5. 显示模式 =%{value1}@, %{value2}@
6. 选择绑定检查器中现在可用的：“显示模式值 2”
7. 将 Value2 绑定到 AC, selection,firstName

这记录在Cocoa Bindings Reference 的 NSTextField 部分。

为了完整起见，这是我自己的一些代码，我在其中以编程方式进行这种绑定：

NSString* bannerPattern = @": %{value1}@ items found, %{value2}@ hidden %{value3}@";
NSString* totalPattern = [dateString stringByAppendingString:bannerPattern];

[ftview.textField bind:@"displayPatternValue1" toObject:ft withKeyPath:@"visibleNumber" options:@{NSDisplayPatternBindingOption : totalPattern}];
[ftview.textField bind:@"displayPatternValue2" toObject:ft withKeyPath:@"hiddenNumber" options:@{NSDisplayPatternBindingOption : totalPattern}];
[ftview.textField bind:@"displayPatternValue3" toObject:ft withKeyPath:@"newString" options:@{NSDisplayPatternBindingOption : totalPattern}];